Tampa Bay load estimates
2021-09-28 18:20:47
Loading estimates for total nitrogen (tons / yr) and hydrologic (million m3 / yr) inputs to Tampa Bay. All estimates from Janicki Environmental. Source content here.
Background
Total nitrogen load estimates are partitioned into one of five categories by source:
- AD: atmospheric deposition
- DPS: domestic point source
- GWS: groundwater source
- IPS: industrial point source
- NPS: nonpoint source
Source estimates for total nitrogen are shown annually from 1985 to present and by month from 2017 to present (current reasonable assurance period). The totals tab shows annual results for total nitrogen, hydrologic load, and total nitrogen vs hydrologic load ratios. The load ratio plots show target ratios as horizontal lines that are applicable to each bay segment.
Estimates are also assigned to one of five major bay segments in Tampa Bay: Old Tampa Bay, Hillsborough Bay, Middle Tampa Bay, Lower Tampa Bay, and the Remainder of Lower Tampa Bay. The “Remainder of Lower Tampa Bay” includes the Manatee River, Terra Ceia Bay, and Boca Ciega Bay. Estimates for all segments are also provided as the sum of loads across the five major bay segments and the remainder of Lower Tampa Bay. Note that this does not include the northern portion of Boca Ciega Bay (i.e., (- N. BCB) in the tables and plots).
Annual load targets for total nitrogen (tons/yr) by major bay segments are as follows (2009 RA Addendum):
- Old Tampa Bay: 486 tons/yr
- Hillsborough Bay: 1451 tons/yr
- Middle Tampa Bay: 799 tons/yr
- Lower Tampa Bay: 349 tons/yr
Major bay segments in Tampa Bay used to assign load estimates. The “Remainder of Lower Tampa Bay” includes the Manatee River, Terra Ceia Bay, and Boca Ciega Bay. Figure courtest of Janicki Environmental, Inc.